CN102081637A - Method for promoting efficiency of file system and related memory device - Google Patents

Method for promoting efficiency of file system and related memory device Download PDF

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Publication number
CN102081637A
CN102081637A CN2009102538959A CN200910253895A CN102081637A CN 102081637 A CN102081637 A CN 102081637A CN 2009102538959 A CN2009102538959 A CN 2009102538959A CN 200910253895 A CN200910253895 A CN 200910253895A CN 102081637 A CN102081637 A CN 102081637A
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name
target folder
eigenwert
folder name
temporary
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CN102081637B (en
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李向荣
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Silicon Motion Inc
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Silicon Motion Inc
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Abstract

The invention relates to a method for promoting efficiency of a file system. The method comprises the following steps of: under the condition of accessing a file system of a memory device according to a plurality of file names, extracting a characteristic value and full file name position information from first read file information aiming at each one of the file names, and caching the characteristic value and the full file name position information; and when the file system is accessed according to a target file name, checking whether the ones matched with the target file name exist in the cached characteristic values, and judging whether to operate the file system corresponding to the target file name. The invention also relates to the related memory device and a controller thereof. Whether to operate the file system corresponding to the target file name can be quickly judged by using the cached characteristic values. Because the cached characteristic values can be used for quick comparison without reading each file name project in a catalogue, the method can promote the efficiency of the file system and save the time.

Description

Be used for promoting the method for archives economy usefulness and relevant memory storage
Technical field
The present invention relates to access (Access) correlative technology field of the archives economy of memory storage, more particularly, relate to a kind of be used for the promoting method of archives economy usefulness and relevant memory storage.
Background technology
Because the technology of flash memory constantly develops, various Portable memory storages (for example: the memory card that meets SD/MMC, CF, MS, XD standard) be implemented on widely in many application in recent years.Therefore, the access control of the flash memory in these Portable memory storages becomes quite popular subject under discussion then.
With NAND type flash memory commonly used, it mainly can divide into the single-order cell, and (Single Level Cell is SLC) with multistage cell (Multiple Level Cell, MLC) flash memory of two big classes.The transistor that in the single-order cell flash memory each is taken as mnemon has only two kinds of charge values, is used for presentation logic value 0 and logical value 1 respectively.In addition, the transistorized storage capacity that in the multistage cell flash memory each is taken as mnemon then is fully utilized, adopt higher voltage to drive, (for example: 00,01,11,10) in a transistor, write down two groups of position information with voltage by different stage; In theory, the recording density of multistage cell flash memory can reach more than the twice of recording density of single-order cell flash memory, and this is extraordinary message for once for the related industry of the NAND type flash memory that runs into bottleneck in the evolution.
Compared to single-order cell flash memory, because the price of multistage cell flash memory is more cheap, and can provide bigger capacity in limited space, so multistage cell flash memory becomes the main flow that Portable memory storage on the market competitively adopts soon.Yet the problem that instability caused of multistage cell flash memory is also appeared in one's mind one by one.At these problems,, always can't take into account operational effectiveness and system resource and use keyholed back plate though some settling modes are provided in the correlation technique.So,, often have corresponding spinoff no matter take which settling mode.
In addition, the keyholed back plate for the archives economy of memory storage in the correlation technique is not good, often needs much to read in advance running and could improve access to archives economy.Yet, too much read running in advance and not necessarily can read useful in the future data, so correlation technique is not only lost time and wasted cushion space.Therefore, the method for a kind of novelty of needs is strengthened the data access of keyholed back plate flash memory, uses keyholed back plate to take into account operational effectiveness and system resource.
Summary of the invention
The technical problem to be solved in the present invention is, at the above-mentioned defective of prior art, provides a kind of be used for the promoting method of archives economy usefulness and relevant memory storage, to address the above problem.
One of the technical solution adopted for the present invention to solve the technical problems is: construct a kind of method that is used for promoting archives economy usefulness, this method includes: under the situation of an archives economy of visiting a memory storage according to a plurality of profile name, at in those profile name each, extract an eigenwert and archives full name positional information from the archive information that reads first, and temporary this eigenwert and this archives full name positional information; And when visiting this archives economy, in the middle of temporary eigenwert, check whether to have and carry out archives economy operation corresponding to this target folder name with coincide person and judging whether according to this of this target folder name according to a target folder name.
Further, the described method of the invention described above, wherein whether inspection has with the identical person of this target folder name and carries out according to this including in addition corresponding to the step that the archives economy of this target folder name is operated in the middle of temporary eigenwert:
Under the situation that a particular characteristic value in temporary eigenwert and this target folder name are coincide, read corresponding to the pointed corresponding profile name of archives full name positional information of this particular characteristic value, and check whether this target folder name is identical with this corresponding profile name.
Further, the described method of the invention described above, wherein whether inspection has with the identical person of this target folder name and carries out according to this including in addition corresponding to the step that the archives economy of this target folder name is operated in the middle of temporary eigenwert:
Whether under this target folder name and this corresponding profile name situation inequality, checking in the middle of temporary eigenwert has any further feature value and this target folder name to coincide.
Further, the described method of the invention described above, wherein whether inspection has with the identical person of this target folder name and carries out according to this including in addition corresponding to the step that the archives economy of this target folder name is operated in the middle of temporary eigenwert:
Do not coincideing under person's the situation person that stops at temporarily then in the middle of the temporary eigenwert whether inspection has and this target folder name is coincide in the middle of the temporary eigenwert with this target folder name.
Further, the described method of the invention described above, wherein whether inspection has with the identical person of this target folder name and carries out according to this including in addition corresponding to the step that the archives economy of this target folder name is operated in the middle of temporary eigenwert:
Under this target folder name situation identical, stop at temporarily then whether the central inspection of temporary eigenwert has and the identical person of this target folder name with this corresponding profile name.
Further, the described method of the invention described above, it includes in addition:
Not coincideing with this target folder name in the middle of temporary eigenwert still has at least one profile name not have under the situation of corresponding eigenwert in person and the relevant catalogue, checks that then this target folder name is whether identical with in this at least one profile name any one.
Further, the described method of the invention described above, it includes in addition:
At in this at least one profile name each, extract an eigenwert and archives full name positional information and kept in from the archive information that reads first.
Two of the technical solution adopted for the present invention to solve the technical problems is: construct a kind of memory storage, this memory storage includes: a flash memory (Flash Memory), and this flash memory comprises a plurality of blocks; And a controller, be used for this flash memory of access (Access) and these a plurality of blocks of management, and be used for promoting archives economy usefulness in addition.In addition, under the situation of an archives economy of visiting this memory storage according to a plurality of profile name, at in those profile name each, this controller extracts an eigenwert and archives full name positional information from the archive information that reads first, and temporary this eigenwert and this archives full name positional information.In addition, when visiting this archives economy according to a target folder name, whether this controller is checked to have with coincide person and judging whether according to this of this target folder name in the middle of temporary eigenwert and is carried out archives economy operation corresponding to this target folder name.
Further, the described memory storage of the invention described above, wherein under the situation that the particular characteristic value in temporary eigenwert and this target folder name are coincide, this controller reads corresponding to the pointed corresponding profile name of archives full name positional information of this particular characteristic value, and checks whether this target folder name is identical with this corresponding profile name.
Further, the described memory storage of the invention described above, wherein under this target folder name and this corresponding profile name situation inequality, whether this controller is checked in the middle of temporary eigenwert has any further feature value and this target folder name to coincide.
Further, the described memory storage of the invention described above is not wherein coincideing under person's the situation with this target folder name in the middle of the temporary eigenwert, this controller stops at temporarily in the middle of the temporary eigenwert whether inspection has and this target folder name is coincide person.
Further, the described memory storage of the invention described above, wherein whether under this target folder name situation identical with this corresponding profile name, in the middle of this controller temporarily stops at temporary eigenwert there be and the identical person of this target folder name inspection.
Further, the described memory storage of the invention described above, wherein not coincideing with this target folder name in the middle of temporary eigenwert still has at least one profile name not have under the situation of corresponding eigenwert in person and the relevant catalogue, and this controller checks that this target folder name is whether identical with in this at least one profile name any one.
Further, the described memory storage of the invention described above, wherein in this at least one profile name each, this controller extracts an eigenwert and archives full name positional information and is kept in from the archive information that reads first.
In addition, the present invention has also constructed a kind of controller of memory storage, and this controller is used for the flash memory in this memory storage of access, this flash memory comprises a plurality of blocks, this controller includes: (Read Only Memory ROM), is used for storing a program code to a ROM (read-only memory); And a microprocessor, be used for carrying out this program code with control access and these a plurality of blocks of management to this flash memory, wherein this controller of carrying out this program code by this microprocessor is used for promoting archives economy usefulness in addition.In addition, under the situation of an archives economy of visiting this memory storage according to a plurality of profile name, at in those profile name each, this controller of carrying out this program code by this microprocessor extracts an eigenwert and archives full name positional information from the archive information that reads first, and temporary this eigenwert and this archives full name positional information.In addition, when visiting this archives economy according to a target folder name, whether this controller of carrying out this program code by this microprocessor is checked to have with coincide person and judging whether according to this of this target folder name in the middle of temporary eigenwert and is carried out archives economy operation corresponding to this target folder name.
Further, the described controller of the invention described above, wherein under the situation that the particular characteristic value in temporary eigenwert and this target folder name are coincide, this controller of carrying out this program code by this microprocessor reads corresponding to the pointed corresponding profile name of archives full name positional information of this particular characteristic value, and checks whether this target folder name is identical with this corresponding profile name.
Further, the described controller of the invention described above, wherein under this target folder name and this corresponding profile name situation inequality, carry out this controller of this program code by this microprocessor and in the middle of temporary eigenwert, check whether have any further feature value and this target folder name to coincide.
Further, the described controller of the invention described above, wherein do not coincideing under person's the situation with this target folder name in the middle of the temporary eigenwert, this controller of carrying out this program code by this microprocessor temporarily stops at checks whether have and this target folder name person that coincide in the middle of the temporary eigenwert.
Further, the described controller of the invention described above, wherein under this target folder name situation identical with this corresponding profile name, this controller of carrying out this program code by this microprocessor temporarily stops at checks whether have and this target folder name person that coincide in the middle of the temporary eigenwert.
Further, the described controller of the invention described above, wherein not coincideing with this target folder name in the middle of temporary eigenwert still has at least one profile name not have under the situation of corresponding eigenwert in person and the relevant catalogue, and this controller of carrying out this program code by this microprocessor checks that this target folder name is whether identical with in this at least one profile name any one.
Further, the described controller of the invention described above, wherein in this at least one profile name each, this controller of carrying out this program code by this microprocessor extracts an eigenwert and archives full name positional information and is kept in from the archive information that reads first.
Implement technical scheme of the present invention, have following beneficial effect: by utilizing temporary eigenwert, the archives economy that whether carries out corresponding to this target folder name that can form a prompt judgement is operated.Owing to can utilize temporary eigenwert promptly to compare, but not read each the profile name project in the catalogue, so the present invention can promote archives economy usefulness and save time.In addition, the present invention does not have the problem of correlation technique such as the too much waste of reading running causes time and cushion space in advance, and therefore, the present invention can take into account operational effectiveness and system resource is used keyholed back plate.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the synoptic diagram of a kind of memory storage of the present invention one first embodiment;
Fig. 2 is the process flow diagram that one embodiment of the invention a kind of is used for promoting the method for archives economy usefulness;
Fig. 3 and Fig. 4 are the implementation detail of method in an embodiment shown in Figure 2.
[primary clustering symbol description]
100 Memory storage
110 Memory Controller
112 Microprocessor
112C Program code
112M ROM (read-only memory)
114 Steering logic
116 Memory buffer
118 Interface logic
120 Flash memory
910 Be used for promoting the method for archives economy usefulness
912,914,922,924,...,954 Step
920 Workflow
Embodiment
Please refer to Fig. 1, Fig. 1 is the synoptic diagram of a kind of memory storage 100 of the present invention one first embodiment, wherein the memory storage 100 of present embodiment especially for the Portable memory storage (for example: the memory card that meets SD/MMC, CF, MS, XD standard).Memory storage 100 includes: a flash memory (Flash Memory) 120; And a controller, be used for access (Access) flash memory 120, wherein this controller Memory Controller 110 for example.According to present embodiment, Memory Controller 110 comprise a microprocessor 112, a ROM (read-only memory) (Read Only Memory, ROM) 112M, a steering logic 114, a memory buffer 116, with an interface logic 118.In addition, ROM (read-only memory) 112M is used for storing a program code 112C, and microprocessor 112 then is used for executive routine code 112C with the access of control to flash memory 120.Note that program code 112C also must be stored in memory buffer 116 or any type of storer.
Under typical situation, flash memory 120 comprises a plurality of blocks (Block), and the erase running of data is that unit erases with the block and this controller (for example: by the Memory Controller 110 of microprocessor 112 executive routine code 112C) is to flash memory 120.In addition, a block can write down the page or leaf (Page) of specific quantity, and wherein this controller is that unit writes with the page or leaf to the running that flash memory 120 writes data.
On real the work, Memory Controller 110 by microprocessor 112 executive routine code 112C can utilize the assembly of itself inside to carry out many control runnings, for example: utilize steering logic 114 to control the access running of flash memory 120 (especially at least one block or the access running of one page at least), utilize memory buffer 116 to carry out required buffered and utilize an interface logic 118 and a main device (Host Device) to link up.
According to present embodiment, the archives economy usefulness that this controller by microprocessor 112 executive routine code 112C can be used to promote memory storage 100 in addition.(for example: under the situation archives of interior this archives economy of perhaps access of browsing the catalogue of this archives economy) according to an archives economy of a plurality of profile name visit memory storages 100, at in those profile name each, this controller by microprocessor 112 executive routine code 112C extracts (Extract) eigenwert and archives full name positional information from the archive information that reads first, and temporary this eigenwert and this archives full name positional information.In addition, when visiting this archives economy according to a target folder name, whether this controller by microprocessor 112 executive routine code 112C is checked to have with coincide person and judging whether according to this of this target folder name in the middle of temporary eigenwert and is carried out archives economy operation corresponding to this target folder name.Correlative detail please refer to Fig. 2 and further specifies.
Fig. 2 is the process flow diagram that one embodiment of the invention a kind of is used for promoting the method 910 of archives economy usefulness.This method can be applicable to memory storage shown in Figure 1 100, especially above-mentioned controller (for example: by the Memory Controller 110 of microprocessor 112 executive routine code 112C).In addition, this method can be implemented by utilizing memory storage shown in Figure 1 100, especially by utilizing above-mentioned controller to implement.This method is described as follows:
In step 912, under the situation of the archives economy of visiting memory storages 100 according to a plurality of profile name, at in those profile name each, this controller extracts an eigenwert and archives full name positional information from the archive information that reads first, and temporary this eigenwert and this archives full name positional information.For example: this eigenwert can comprise the inspection of at least a portion (for example one or more byte) of the profile name of its representative and/or this profile name and (checksum).Again for example: the profile name of this eigenwert representative comprises long profile name (it comprises greater than the main profile name of 8 bytes and the extension profile name of 3 bytes) and short profile name (its comprise the main profile name that is no more than 8 bytes and the extension profile name of 3 bytes), and this eigenwert can comprise this length profile name at least a portion (for example one or more byte), this length profile name inspection and, the inspection of at least a portion (for example one or more byte) of this weak point profile name and/or this weak point profile name and.
In step 914, when visiting this archives economy according to a target folder name, whether this controller is checked to have with coincide person and judging whether according to this of this target folder name in the middle of temporary eigenwert and is carried out archives economy operation corresponding to this target folder name.Especially, when receiving the transmission of this main device about the archives economy operational order of this target folder name, this controller can utilize temporary eigenwert promptly to compare, and whether the archives economy operation of therefore promptly being checked this archives economy operational order representative violates some pre-defined rule, to judge whether to carry out this archives economy operation.For example: set up under the situation of archives at this archives economy operational order indication memory storage 100, only when this target folder name differed from existing profile name in the associative directory, this controller just can carry out this operation.Again for example: open/delete at this archives economy operational order indication memory storage 100 under the situation of archives of this target folder name representative, only when this target folder name was identical with a certain profile name in the associative directory, this controller just can carry out this operation.By utilizing temporary eigenwert, this controller can judge whether to carry out the archives economy operation corresponding to this target folder name apace, so method of the present invention and relevant memory storage and controller thereof can provide splendid usefulness.
According to present embodiment, under the situation that a particular characteristic value in temporary eigenwert and this target folder name are coincide, this controller reads corresponding to the pointed corresponding profile name of archives full name positional information of this particular characteristic value, and checks whether this target folder name is identical with this corresponding profile name.Whether under this target folder name situation identical with this corresponding profile name, in the middle of this controller temporarily stops at temporary eigenwert there be and the identical person of this target folder name inspection.So by utilizing temporary eigenwert, whether this controller can form a prompt judgement carries out archives economy operation corresponding to this target folder name.Because this controller can utilize temporary eigenwert promptly to compare, but not reads each the profile name project in the catalogue, so the present invention can promote archives economy usefulness and save time.
Note that under this target folder name and this corresponding profile name situation inequality whether this controller can be checked has any further feature value and this target folder name to coincide in the middle of temporary eigenwert; Do not coincideing under person's the situation this controller stops at temporarily in the middle of the temporary eigenwert whether inspection has and this target folder name is coincide person in the middle of the temporary eigenwert with this target folder name.So, this controller finishes the temporary at present total comparison of eigenwert.Not coincideing with this target folder name in the middle of temporary eigenwert still has at least one profile name not have under the situation of corresponding eigenwert in person and the relevant catalogue, this controller checks that this target folder name is whether identical with in this at least one profile name any one, with the comparison of finishing all files name in the catalogue and judge whether to carry out archives economy operation corresponding to this target folder name according to this.Especially, in this at least one profile name each, this controller extracts an eigenwert and archives full name positional information and is kept in from the archive information that reads first, with the database of the temporary eigenwert of further expansion; So when running into the same target profile name, this controller can more promptly operate next time.
According to a special case of present embodiment, this controller can extract the eigenwert of this target folder name earlier, more relatively the eigenwert of this target folder name whether with the temporary identical running of eigenwert with completing steps 914.For example: comprise in this eigenwert at least a portion of profile name of its representative and this profile name inspection and situation under, the eigenwert of extracting this target folder name in advance can promote the usefulness of this controller.Yet this is not a limitation of the present invention just for illustrative purposes.Change example according to some of present embodiment, only have in described this eigenwert of step 912 under the situation of at least a portion of profile name of its representative, this controller needn't extract the eigenwert of this target folder name, can carry out step 914.
Fig. 3 and Fig. 4 are the implementation detail of method 910 in an embodiment shown in Figure 2, and wherein present embodiment is a variation example embodiment illustrated in fig. 2.When receiving the transmission of this main device about the archives economy operational order of this target folder name, this controller (for example :) by the Memory Controller 110 of microprocessor 112 executive routine code 112C but execution graph 3 and workflow 920 shown in Figure 4, to judge whether to carry out archives economy operation corresponding to this target folder name.Workflow 920 is described as follows:
Please refer to Fig. 3.In step 922, this controller extracts the eigenwert of an input profile name.At this, this input profile name is represented this target folder name, and especially this main device inputs to the target folder name of this controller.
In step 924, whether the present catalogue of this controller inspection gets (Cached) soon.Get soon when present catalogue, then enter step 942; Otherwise, enter step 926.
In step 926, this controller a little is set in reading of profile name project the place that begins of catalogue.At this, each project in the catalogue comprises each profile name and relevant information thereof, so those projects can be described as the profile name project, wherein this controller can read one by one.
In step 928, this controller reads a profile name.
In step 930, this controller extracts the eigenwert of this profile name (be in the step 928 read profile name).
In step 932, this controller is got eigenwert and archives full name positional information of present profile name project soon.
In step 934, this controller checks whether eigenwert coincide.Clearer and more definite, this controller checks whether the eigenwert of this profile name coincide with the eigenwert of this input profile name.If coincide, then enter step 936; Otherwise, enter step 938.
In step 936, this controller checks whether this profile name coincide.Clearer and more definite, this controller checks whether this profile name coincide with this input profile name.If coincide then power cut-off flow process 920; Otherwise, enter step 938.
In step 938, this controller will read and a little move on to next profile name project.
In step 940, whether this controller inspection reaches the end of catalogue.If reach the end of catalogue, then power cut-off flow process 920; Otherwise, reenter step 928.
Please refer to Fig. 4.In step 942, this controller compares index with one and is set at zero, and wherein relatively index is the required index of running that is begun by step 944 in the middle of Fig. 4.
In step 944, this controller loads the information of getting soon, i.e. the information of the described present catalogue of step 924 is especially corresponding to this partial information (Partial Information) of index relatively.
In step 946, this controller checks whether eigenwert coincide.Clearer and more definite, this controller checks whether the eigenwert in this partial information coincide with the eigenwert of this input profile name.If coincide, then enter step 948; Otherwise, enter step 952.
In step 948, this controller reads profile name according to the positional information of getting soon.Especially, this controller reads the pointed corresponding profile name of archives full name positional information in this partial information.
In step 950, this controller checks whether profile name coincide.Clearer and more definite, this controller checks whether the profile name that is read in the step 948 coincide with this input profile name.If coincide then power cut-off flow process 920; Otherwise, enter step 952.
In step 952, this controller increases this comparison index.
In step 954, whether the information that this controller inspection is got soon relatively finishes.If the information of getting soon relatively finishes, then enter step 938; Otherwise, enter step 944.
Note that in step 942 this controller should compare index and be set at zero.This is not a limitation of the present invention just for illustrative purposes.Some variation example according to present embodiment, under the situation of the described input profile name of step 922 (i.e. this target folder name) selected profile name project when representing the user to browse in archives economy, this controller can be set at this comparison index the index of representing the selected profile name project of user in step 942.
One of benefit of the present invention is, by utilizing temporary eigenwert, this controller can judge whether to carry out the archives economy operation corresponding to this target folder name apace, so method of the present invention and relevant memory storage and controller thereof can provide splendid usefulness.In addition, the present invention does not have the problem of correlation technique such as the too much waste of reading running causes time and cushion space in advance.Therefore, the present invention can take into account operational effectiveness and system resource use keyholed back plate.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.

Claims (14)

1. a method that is used for promoting archives economy usefulness is characterized in that, this method includes:
Under the situation of an archives economy of visiting a memory storage according to a plurality of profile name, at in those profile name each, extract an eigenwert and archives full name positional information from the archive information that reads first, and temporary this eigenwert and this archives full name positional information; And
When visiting this archives economy, in the middle of temporary eigenwert, check whether to have and carry out archives economy operation corresponding to this target folder name with coincide person and judging whether according to this of this target folder name according to a target folder name.
2. method according to claim 1 is characterized in that, wherein whether inspection has with the identical person of this target folder name and carry out according to this including in addition corresponding to the step that the archives economy of this target folder name is operated in the middle of temporary eigenwert:
Under the situation that a particular characteristic value in temporary eigenwert and this target folder name are coincide, read corresponding to the pointed corresponding profile name of archives full name positional information of this particular characteristic value, and check whether this target folder name is identical with this corresponding profile name.
3. method according to claim 2 is characterized in that, wherein whether inspection has with the identical person of this target folder name and carry out according to this including in addition corresponding to the step that the archives economy of this target folder name is operated in the middle of temporary eigenwert:
Whether under this target folder name and this corresponding profile name situation inequality, checking in the middle of temporary eigenwert has any further feature value and this target folder name to coincide.
4. method according to claim 3 is characterized in that, wherein whether inspection has with the identical person of this target folder name and carry out according to this including in addition corresponding to the step that the archives economy of this target folder name is operated in the middle of temporary eigenwert:
Do not coincideing under person's the situation person that stops at temporarily then in the middle of the temporary eigenwert whether inspection has and this target folder name is coincide in the middle of the temporary eigenwert with this target folder name.
5. method according to claim 2 is characterized in that, wherein whether inspection has with the identical person of this target folder name and carry out according to this including in addition corresponding to the step that the archives economy of this target folder name is operated in the middle of temporary eigenwert:
Under this target folder name situation identical, stop at temporarily then whether the central inspection of temporary eigenwert has and the identical person of this target folder name with this corresponding profile name.
6. method according to claim 1 is characterized in that it includes in addition:
Not coincideing with this target folder name in the middle of temporary eigenwert still has at least one profile name not have under the situation of corresponding eigenwert in person and the relevant catalogue, checks that then this target folder name is whether identical with in this at least one profile name any one.
7. method according to claim 6 is characterized in that it includes in addition:
At in this at least one profile name each, extract an eigenwert and archives full name positional information and kept in from the archive information that reads first.
8. a memory storage is characterized in that, includes:
One flash memory, this flash memory comprises a plurality of blocks; And
One controller is used for this flash memory of access and these a plurality of blocks of management, and is used for promoting archives economy usefulness in addition;
Wherein under the situation of an archives economy of visiting this memory storage according to a plurality of profile name, at in those profile name each, this controller extracts an eigenwert and archives full name positional information from the archive information that reads first, and temporary this eigenwert and this archives full name positional information; And when visiting this archives economy according to a target folder name, whether this controller is checked to have with coincide person and judging whether according to this of this target folder name in the middle of temporary eigenwert and is carried out archives economy operation corresponding to this target folder name.
9. memory storage according to claim 8, it is characterized in that, wherein under the situation that the particular characteristic value in temporary eigenwert and this target folder name are coincide, this controller reads corresponding to the pointed corresponding profile name of archives full name positional information of this particular characteristic value, and checks whether this target folder name is identical with this corresponding profile name.
10. memory storage according to claim 9, it is characterized in that, wherein under this target folder name and this corresponding profile name situation inequality, whether this controller is checked in the middle of temporary eigenwert has any further feature value and this target folder name to coincide.
11. memory storage according to claim 10, it is characterized in that, wherein do not coincideing under person's the situation this controller stops at temporarily in the middle of the temporary eigenwert whether inspection has and this target folder name is coincide person in the middle of the temporary eigenwert with this target folder name.
12. memory storage according to claim 9 is characterized in that, wherein whether under this target folder name situation identical with this corresponding profile name, in the middle of this controller temporarily stops at temporary eigenwert there be and the identical person of this target folder name inspection.
13. memory storage according to claim 8, it is characterized in that, wherein not coincideing with this target folder name in the middle of temporary eigenwert still has at least one profile name not have under the situation of corresponding eigenwert in person and the relevant catalogue, and this controller checks that this target folder name is whether identical with in this at least one profile name any one.
14. memory storage according to claim 13 is characterized in that, wherein in this at least one profile name each, this controller extracts an eigenwert and archives full name positional information and is kept in from the archive information that reads first.
CN200910253895.9A 2009-12-01 2009-12-01 Method for promoting efficiency of file system and related memory device Active CN102081637B (en)

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CN102081637B CN102081637B (en) 2014-04-30

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