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fatfs: expose FF_USE_FASTSEEK option

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This commit is contained in:
Felipe Neves 2020-08-03 14:26:59 -03:00
parent a88989fee8
commit 8815a3dfa0
2 changed files with 13 additions and 1 deletions
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12
components/fatfs/Kconfig
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@ -180,4 +180,16 @@ menu "FAT Filesystem support"
Disable this option if optimizing for performance. Enable this option if
optimizing for internal memory size.
config FATFS_USE_FASTSEEK
bool "Enable fast seek algorithm when using f_lseek function"
default n
help
The fast seek feature enables fast backward/long seek operations without
FAT access by using an in-memory CLMT (cluster link map table).
It is applied to f_read and f_write function as well, however,
the file size cannot be expanded by f_write.
f_lseek function while the file is at fast seek mode.
endmenu

2
components/fatfs/src/ffconf.h
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@ -44,7 +44,7 @@
/* This option switches f_mkfs() function. (0:Disable or 1:Enable) */
#define FF_USE_FASTSEEK 0
#define FF_USE_FASTSEEK CONFIG_FATFS_USE_FASTSEEK
/* This option switches fast seek function. (0:Disable or 1:Enable) */