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authorChao Yu <chao2.yu@samsung.com>2015-05-28 11:16:57 (GMT)
committerJaegeuk Kim <jaegeuk@kernel.org>2015-06-02 16:53:27 (GMT)
commitf62185d0e283e9d311e3ac1020f159d95f0aab39 (patch)
treef1e56b52a9e770dac6cb1ecfedb5845b5c58b247 /fs/f2fs/segment.c
parent528e34593d6eff11a289ef23452c66175a340f0b (diff)
downloadlinux-f62185d0e283e9d311e3ac1020f159d95f0aab39.tar.xz
f2fs: support FALLOC_FL_INSERT_RANGE
FALLOC_FL_INSERT_RANGE flag for ->fallocate was introduced in commit dd46c787788d ("fs: Add support FALLOC_FL_INSERT_RANGE for fallocate"). The effect of FALLOC_FL_INSERT_RANGE command is the opposite of FALLOC_FL_COLLAPSE_RANGE, if this command was performed, all data from offset to EOF in our file will be shifted to right as given length, and then range [offset, offset + length] becomes a hole. This command is useful for our user who wants to add some data in the middle of the file, for example: video/music editor will insert a keyframe in specified position of media file, with this command we can easily create a hole for inserting without removing original data. This patch introduces f2fs_insert_range() to support FALLOC_FL_INSERT_RANGE. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Yuan Zhong <yuan.mark.zhong@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.c')
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