f2fs: fix multiple f2fs_add_link() calls having same name

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commit 88c5c13a50 upstream.

It turns out a stakable filesystem like sdcardfs in AOSP can trigger multiple
vfs_create() to lower filesystem. In that case, f2fs will add multiple dentries
having same name which breaks filesystem consistency.

Until upper layer fixes, let's work around by f2fs, which shows actually not
much performance regression.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Jaegeuk Kim 2017-02-14 09:54:37 -08:00 • committed by Greg Kroah-Hartman

parent ec160ad2ac

commit d00d1b71d9

2 changed files with 30 additions and 5 deletions

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34

fs/f2fs/dir.c

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1

fs/f2fs/f2fs.h

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