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authorAshish Sangwan <a.sangwan@samsung.com>2013-07-01 08:12:41 -0400
committerTheodore Ts'o <tytso@mit.edu>2013-07-01 08:12:41 -0400
commit6ae06ff51eab5dcbbf959b05ce0f11003a305ba5 (patch)
tree0205ef491e599b188fc653872c166db57ae3b482 /fs/9p
parent41a5b913197c3a25fddef1735dc9b3d1fdc57428 (diff)
downloadlinux-6ae06ff51eab5dcbbf959b05ce0f11003a305ba5.tar.bz2
ext4: optimize starting extent in ext4_ext_rm_leaf()
Both hole punch and truncate use ext4_ext_rm_leaf() for removing blocks. Currently we choose the last extent as the starting point for removing blocks: ex = EXT_LAST_EXTENT(eh); This is OK for truncate but for hole punch we can optimize the extent selection as the path is already initialized. We could use this information to select proper starting extent. The code change in this patch will not affect truncate as for truncate path[depth].p_ext will always be NULL. Signed-off-by: Ashish Sangwan <a.sangwan@samsung.com> Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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