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ext4: Check return value of sb_getblk() and friends
authorNamhyung Kim <namhyung@gmail.com>
Thu, 28 Oct 2010 01:30:11 +0000 (21:30 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Thu, 28 Oct 2010 01:30:11 +0000 (21:30 -0400)
Fail block allocation if sb_getblk() returns NULL. In that case,
sb_find_get_block() also likely to fail so that it should skip
calling ext4_forget().

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

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